Aqua Lung i750TC Owner's Manual

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i750TC

Dive Computer Owner's Manual

Doc. 12-7852-r05 (8/5/16)

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Summary of Contents for Aqua Lung i750TC

Page 2: Notices
The program within the i750TC simulates the absorption of inert gases into the body by using a mathematical model. This model is merely a way to apply a limited set of data to a large range of experiences. The i750TC dive computer model is based upon the latest research and experiments in decompression theory.
Page 3: Warnings
• If you exceed certain limits, the i750TC will not be able to help you get safely back to the surface. These situations exceed tested limits and can result in loss of some functions for 24 hours after the dive in which a violation occurred.
Page 4: Table Of Contents
LOW BATTERY WHILE ON THE SURFACE Alarm During Deco LOW BATTERY DURING A DIVE Alarm On Surface AUDIBLE ALARM PROXIMITY OF THE TRANSMITTERS & i750TC GAUGE MODE ON THE SURFACE BEFORE A DIVE DIVE SURFACE MODE GAUGE SURF MAIN MENU...
Page 5 SET HEADING TIMEOUT EARMARK ALARMS ASC (Ascent) Alarm Depth Alarm REFERENCE UPLOADING/DOWNLOADING CARE AND CLEANING SERVICE BATTERY REPLACEMENT TECHNICAL DATA NO DECOMPRESSION TIME LIMITS OXYGEN EXPOSURE LIMITS ALTITUDE LEVELS SPECIFICATIONS ABBREVIATIONS/TERMS © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 7: Basics
Divers may choose between three modes of functionality consisting of Dive, Gauge, and Free Mode. Though the i750TC is easy to use, you will get the most out of your new i750TC if you take some time to familiarize yourself with its displays and operation.
Page 8: Display Icons
GAS MIX (AIR OR 21 - 100%) BATTERY CONDITION IS GOOD (SURFACE ONLY) LOW BATTERY WARNING LOW BATTERY ALARM SURFACE TIME COUNTDOWN TIMER (FREE MODE) RUN TIMER (GAUGE MODE) MAXIMUM DEPTH (METERS OR FEET) © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 9: Buttons
GETTING STARTED MODE BUTTONS The i750TC utilizes 3 control buttons called the MODE, ADV (Advance), and SELECT buttons. They allow you to select mode options and access specific information. They are also used to enter settings and acknowledge the audible alarm.
Page 10: Button Functions
Main screen • to exit or step back to the previous screen or setting MODE • to increase a setting value at a faster rate • to access Adjust Brightness screen MODE © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 12: Home Menu
HOME MENU This is a base menu that provides access to general items common to all the operating dive modes. When the i750TC is activated manually, this is the first screen you will see after the Welcome screen. to select...
Page 13: My Info
If you do not remember to log or download your dives, they will be lost when the memory over- writes. See the PC Download section of this manual for instructions on downloading dives. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 14: Setup Menu
MODE (DIVE Mode only) SETUP MENU This screen allows you to adjust the Auto Dim, Set Date Time, and Bluetooth® features. to select menu option MODE to scroll to scroll down © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 15: Set Auto Dim
HOME MENU 1. SET AUTO DIM While underwater the i750TC screen dims after a set time interval from the last button press. This is done to reduce distractions during the dive and to conserve power. The i750TC allows you to customize the time interval and degree of dimming.
Page 16: Bluetooth
Within this screen the Bluetooth® may be turned on or off. When Bluetooth® is turned on it will operate in sniffing mode (searching for compatible devices) while on the surface. Comunication with your i750TC must be initiated with your traditional computer or mobile device using Diverlog software.
Page 17: Dc (Dive Computer) Info
HOME MENU DC (DIVE COMPUTER) INFO Information displayed on the DC Info screen should be recorded and kept with your sales receipt. It will be required in the event that your i750TC requires factory service. firmware revision date of last...
Page 19: Dtr (Dive Time Remaining)
As you ascend, the N2 Bar Graph will recede as control shifts to slower compartments. This is a feature of the decompression model that is the basis for multilevel diving, one of the most important advantages that Aqua Lung dive computers offer.
Page 20: Bar Graphs
DS (DEEP STOP) When the DS selection is set ON, it will trigger after descending deeper than 24 m (80 ft. The i750TC then calcu- lates (continually updating) a Stop Depth equal to ½ the Max Depth.
Page 21: Ss (Safety Stop)
• There is no penalty if you surface prior to completing the Safety Stop or choose to ignore it. LOW BATTERY WHILE ON THE SURFACE Warning Level • The i750TC functions continue but but screen brightness is limited to 60% max. • The Battery icon appears amber. © Aqua Lung International, Inc. (2016)
Page 22: Low Battery During A Dive
Alarm Level • The i750TC functions continue but screen brightness is limited to 60% max. • The Battery icon appears flashing. 5 seconds after entering Surface mode the i750TC will shut down. AUDIBLE ALARM While operating in Dive or Gauge mode, the audible alarm will emit 1 beep per second for 10 seconds when alarms strike.
Page 23: Proximity Of The Transmitters & I750Tc
The i750TC cannot effectively receive a signal when it is held out to the sides of the TMT or held at distances greater than 0.91 m (3 ft) in front of the TMT. Best reception is achieved when the i750TC is within less than 0.91 m (3 ft) of the TMT.
Page 24 Link Interruption Underwater During a dive, you may at times move the i750TC out of the signal pattern of the TMT, resulting in a temporary loss of the link signal. The link will be restored within 4 seconds after the i750TC is moved back into its correct position.
Page 26: On The Surface Before A Dive
The ALT 1 screen displays essential data from the last dive. If there has been no dive within the current activation cycle, the the max depth and elapsed dive time will be displayed as dashes. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 27: Alt 2
Tissue Desaturation at sea level taking into consideration the CF (Con- servative Factor) if the i750TC CF setting was set on. It shall begin counting down 10 minutes after surfacing from DIVE or FREE dives counting down from a maximum of 23:50 to 0:00 (hr:min). When the DESAT countdown reaches 0:00 (hr:min), which will generally occur prior to the FLY countdown reaching 0:00 (hr:min), it will remain on the display as 0:00 until the Fly countdown also reaches 0:00.
Page 28: Dive Menu
No Decompression or O2 MIN , current to exit setpoint current PO Alarm setpoint, blank if FO2 is Air MODE Maximum Operating Depth to decrease to increase depth depth © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 29: Set Gas
OFF for Gas 2 and 3. Settings revert to the defaults when 24 hours elapse without conducting a dive. If you save a nitrox mix value for any gas, the i750TC will highlight the PO alarm value allowing it to be set. Additionally, the i750TC allows for each gas (1 - 3) to have individual PO alarm settings.
Page 30: Transmitters
DIVE SURFACE MODE TRANSMITTERS The i750TC can use up to 3 transmitters to monitor gas supplies. The TMT Menu allows for the programming of the wrist unit to receive the signals from selected Aqua Lung transmitters. See the Dive Mode Features section (p. 23) for further information on transmitters.
Page 31: Set Alarms
The Dive Time Alarm allows you to set an alarm to go off at a predetermined amount of dive time. Settings include OFF or 10 - 180 min. DIVE-T ALARM TRIGGERED flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 32 The Turn Pressure Alarm allows you to set an alarm to go off at a designated turn pressure. You may choose from OFF or 70 to 205 BAR (1000 to 3000 PSI) in increments of 5 BAR (250 PSI). TURN PRESS ALARM TRIGGERED flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 33: Set Utilities
The Units feature allows you to select whether Metric (M, BAR) or Imperial (FT, PSI) units of mea- sure will be displayed. 3. DEEP STOP The Deep Stop feature can be set ON or OFF. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 34: Safe Stop (Safety Stop)
Download function stores much larger files for each dive. Depending on the chosen set- tings and dive durations, it is possible to see dives stored in the i750TC's onboard Log that have already been overwritten in the PC Download Partition. Choosing a longer Sample Rate interval will consume less memory per dive.
Page 36: Initiating A Dive
DIVE OPERATION INITIATING A DIVE With the i750TC in Dive Mode, a dive will commence upon descending to 1.5 m (5 ft) for at least 5 seconds. Be- low is a diagram to help you navigate Dive Mode functions. NO DECO DIVE MAIN...
Page 37: Dive Alt 1
This screen simply tells you the current time of day, ambient temperature, and max depth. DIVE ALT 2 The ALT 2 screen displays information pertaining to nitrox; it is bypassed if the i750TC is set for air. saturation 0 - 100...
Page 38: Deep Stop Main
SURFACING Upon ascending to 0.9 m (3 ft) the i750TC transitions to Dive Surface mode. For the first 10 minutes after a dive the i750TC will continue to display the maximum depth and elapsed dive time. Once the surface time reaches 10 minutes the i750TC will display the standard Dive Surface screen.
Page 39: Gas/Transmitter Switches
• If you exceed certain limits, the i750TC will not be able to help you get safely back to the surface. These situations exceed tested limits and can result in loss of some functions for 24 hours after the dive in which a violation occurred.
Page 40 1.6, then a warning not to switch will display. The i750TC will maintain the current gas without switching. The diver may overide the i750TC and force the gas switch by pressing the SE- LECT button during the DO NOT SWITCH TO message.
Page 41: Complications
DIVE OPERATION COMPLICATIONS The preceding information has described standard dive operations. Your new i750TC is also designed to help you to the surface in less than ideal situations. The following is a description of these situations. Take some time to familiarize yourself with these operations before diving your i750TC.
Page 42: Conditional Violation (Cv)
• If the DV1 status is ignored, the i750TC will enter DV1 Surface mode for 5 minutes upon surfacing from the dive. Down arrows and Deco Stop depth/time will alternate with VIOLATION. After 5 minutes on the surface in DV1 mode, the unit will enter VGM (Violation Gauge Mode).
Page 43: Delayed Violation 2 (Dv 2)
GO UP TOO DEEP message will flash. Only dashes will display for Current Depth signifying that you are too deep. * The maximum functional depth (Dive/Gauge/Free = 100 m / 330 ft) is the depth at which the i750TC can properly perform calculations or provide accurate display information.
Page 44: Violation Gauge Mode On The Surface
GO UP message, and up arrows will flash (in place of TTS and DIVE-T) continually until decreases below the alarm set point. During this time the TTS and DIVE-T will be available on the Alt screen. flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 45: Po 2 During Decompression
If O2 SAT reaches the Alarm level, the audible alarm sounds. The UP message, up arrows, and the O2 SAT value will flash in place of TTS and DIVE-T. During this time the TTS and DIVE-T will be available on the Alt screen. flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 46: Warning During Decompression
• If O2 SAT becomes less than100% during the first 5 min on the surface, the Delayed Violation 1 Main screen will be displayed. • If O2 SAT is still 100% after 5 min, operation is to revert to Violation Gauge Mode for 24 hours. flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 48: On The Surface Before A Dive
Home Menu Gauge Menu *Adjust Brightness functions the same as in ALT 1 MODE the Home Menu, see p.12 ALT 2 ALT 3 back to Main © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 49: Gauge Surf Main Menu
NOTE: Gauge Surface ALT screens and Menu options are similar to those described previously for Dive Mode. See the Dive Surface Mode chapter for further details. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 50: Initiating A Dive
INITIATING A DIVE With the i750TC in Gauge Mode, a dive will commence upon descending to 1.5 m (5 ft) for longer than 5 seconds. Below is a diagram to help you navigate Gauge Dive Mode functions. The dive will end and revert to Surface Mode upon ascent to 0.9 m (3 ft) of depth for at least 1 second.
Page 51: Gauge Dive Alt
The max depth on the Alt screen will also be represented by dashes. * The maximum functional depth (Dive/Gauge/Free = 100 m/330 ft330) is the depth at which the i750TC can properly perform calculations or provide accurate display information.
Page 53: Free Dive Mode Details
• The mathematical models currently used in the i750TC are based on no decompression/decompression multi- level repetitive dive schedules. • These algorithms do not take into account the physiological changes associated with the high pressures that competitive type free diving can expose a diver to.
Page 54: On The Surface Before A Dive
Home Menu, see p.12 reset CDT NOTE: The Free ALT screens are similar to the Dive Surface ALT screens described previously. See the Dive Surface Mode chapter for further details. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 55: Free Surf Main Menu
FREE SURF MAIN MENU To view to adjust i750TC Free Dive settings you must navigate through the Surf Main Menu. Enter the menu by pressing the MODE button. Main Menu screens and options will be discussed in the order they appear in the menu.
Page 56: Set Menu
3. RTI AL (Repeating Time Interval Alarm) The RTI Alarm allows you to set an audible alarm to go off repeatedly every 30 seconds during a dive. FREE DIVE MAIN (RTI Triggered) flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 57: Depth Al (Alarm)
INITIATING A DIVE With the i750TC in Free Mode, a dive will commence upon descending to 1.5 m (5 ft) for longer than 5 seconds. Below is a diagram to help you navigate Free Dive Mode functions. The dive will end and revert to Surface Mode upon ascent to 0.9 m (3 ft) of depth for at least 1 second.
Page 58: Free Dive Main
On the surface, the graphic GO UP and Up Arrows are removed, the graphic VIOLATION is to flash (red) for 24 hours with Violation Gauge Mode activated to prevent further dives. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 60: Compass Display Icons
COMPASS MODE COMPASS DISPLAY ICONS DEPTH OR SURFACE TIME TIME OUT COUNTDOWN ASCENT RATE HEADING MARKER HEADING DEGREES DIVER'S DIRECTION (LUBBER LINE) RECIPRICAL HEADING MARKER © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 61: Overview
Gauge, or Free operation modes by holding the SELECT button for at least 2 seconds. • The i750TC reverts back to the previous operation mode after 1 minute unless the Compass Mode is reset by pressing any of the buttons. See the Timeout section at the end of this chapter for further details.
Page 62: Compass Main Menu
The Main menu allows you to adjust compass accuracy. The different selections will be described in the order they appear in the menu. NOTE: The Main Menu can only be accessed while on the surface. During a dive the i750TC will use the last saved settings when accessing the Compass Mode.
Page 63 2. Turn the unit face up until it beeps. 3. Rotate the unit continually until it beeps. 4. The message READY PASSED CALIBRATION or FAILED TO CALIBRATE TRY AGAIN will then appear. © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 64: Set Declination
The heading can be reset at any- time by pressing the Advance button again. SET HEADING HEADING IS SET heading marker MODE heading © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 65: Timeout
By pressing the Mode button during a dive you can manually record a data snapshot which can later be accessed using the i750TC's download feature. The message "EARMARK APPLIED" will be displayed for 3 seconds as confirmation after an earmark is made.
Page 66: Alarms
When the ascent is faster than the recommended 9 m (30 fpm), all segments flash until the ascent is slowed. See pg. 20 for further details. flashing Depth Alarm Depth digits flash red until shallower than the alarm depth set. flashing © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 68: Uploading/Downloading
Small scratches will naturally disappear underwater. • Soak and rinse the i750TC in fresh water at the end of each day of diving, and check to ensure that the areas around the low pressure (depth) sensor, PC interface data port, and buttons are free of debris or obstructions.
Page 69: Battery Replacement
Inspect the buttons, lens, and housing to ensure they are not cracked or damaged. If there is any sign of moisture in the i750TC, DO NOT attempt to use it for diving until it receives proper service by the Aqua Lung factory or an authorized regional distributor.
Page 70: Altitude Sensing And Adjustment
• No adjustments are made during any time that the wet contacts are bridged. When diving in high altitude waters from 916 to 4,270 meters (3,001 to 14,000 feet), the i750TC automatically adjusts to these conditions providing corrected depth, and reduced No Decompression and O2 Times at intervals of 305 meters (1,000 feet).
Page 71 REFERENCE (14,000 feet). At Sea Level, calculations are based upon an altitude of 1828.8 meters (6,000 feet). The i750TC will not function as a dive computer above 4,270 meters (14,000 feet). © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 73: No Decompression Time Limits
1221 1526 1831 2136 2441 2746 3051 3356 3661 3966 (meters) Times greater than 99 minutes display as 99 on the i750TC screen. The above figures in the above 1220 1525 1830 2135 2440 2745 3050 3355 3660 3965 4270 chart are actual no decompression time values the i750TC uses for calculations.
Page 74: Oxygen Exposure Limits
OXYGEN EXPOSURE LIMITS (from NOAA Diving Manual) MAX DURATION MAX TOTAL DURATION SINGLE EXPOSURE 24 HOUR DAY (ATA) (MIN) (MIN) 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 75: Specifications
• Red (Alarm) - Red Icon flashing on the Surface and Dive Main screens. If during a dive, the message GO UP LOW BATTERY flashes. If on the surface, the message CHANGE BATT flashes until the unit shuts off. The bat- tery must be changed before using your i750TC Operating Temperature: •...
Page 76 1 minute • Free Countdown Timer 9:59 to 0:00 min:sec 1 second • Violation Countdown Timer 23:50 to 0:00 hr:min 1 minute Max Functional Depth: Limit: • DIVE/GAUGE/FREE 100 M (330 FT) © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 77 • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician. CAUTION: Changes or modification to this unit not expressly approved by Aqua Lung International could void the user's authority to operate the equipment.
Page 78: Abbreviations/Terms
SR = Sample Rate GTR = Gas Time Remaining SS = Safety Stop H2O = Water SURF = Surface HIST = History TTS = Time To Surface IMP = Imperial (measure) VIO/VIOL = Violation © Aqua Lung International, Inc. (2016) Doc. 12-7852-r05 (8/5/16)
Page 79 www.aqualung.com...

Aqua Lung i750TC Owner's Manual

Getting Started

Home Menu

Dive Features

Dive Surface Mode

Dive Operation

Gauge Mode

Free Mode

Compass Mode

Reference

Technical Data

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